repairs

Truck Engine Repair, Rebuild & Conversion Services in Texas

When it comes to engine repair, rebuild, and conversion services for your fleet, heavy-duty, medium-duty, and light-duty trucks, you can trust OTR Fleet Service. Our expertise and top-quality services will ensure your trucks run at their best.

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Engine Repair Services 

At OTR Fleet Service, we understand the critical role engines play in the performance and efficiency of your trucks. Our knowledgeable technicians are well-versed in diagnosing and repairing a wide range of engine issues. Whether it's a minor repair or a complex problem, we have the expertise to get the job done right.

Our engine repair services include:

  • Diagnostic Services: We employ advanced diagnostic equipment to identify engine problems accurately. Through thorough inspections, analysis of engine codes, and diagnostic tests, we pinpoint the root cause of any issues.
  • Component Replacement: We replace worn or damaged engine components, such as glow plugs, belts, hoses, gaskets, and sensors, ensuring optimal engine performance.
  • Fuel System Repairs: We address fuel system issues, including fuel pump failures, injector problems, and fuel leaks. Our comprehensive services include fuel pressure tests, injector cleaning, and repair or replacement of fuel system components as needed.
  • Cooling System Repairs: We diagnose and repair cooling system issues, such as radiator leaks, water pump failures, and thermostat malfunctions. Our expert technicians ensure proper coolant flow, temperature regulation, and prevention of engine overheating.

Engine Rebuild, Overhaul & Conversion Services 

When engine problems require more extensive solutions, OTR Fleet Service offers engine rebuild, overhaul, and conversion services.

Our engine rebuild, overhaul, and conversion services include:

  • Engine Inspections: We conduct thorough inspections, assessing the condition of all engine components and identifying areas that require attention.
  • Cylinder Head Rebuilds: We perform cylinder head repairs and valve replacements to restore proper compression and sealing, optimizing engine performance.
  • Piston and Ring Replacement: We replace worn or damaged pistons and rings, ensuring optimal compression and efficient power output from your engine.
  • Crankshaft and Camshaft Services: We address issues with the crankshaft and camshaft, including repairs, regrinding, or replacements, as necessary, to restore proper engine functionality.
  • Engine Conversions: We specialize in engine conversions, whether you're looking to upgrade to a more powerful engine or considering a switch to alternative fuels. Our skilled technicians can guide you through the process and ensure a seamless engine conversion.

Contact Us 

When it comes to engine repair, rebuild, and conversion services, trust OTR Fleet Service. Contact us today to schedule an appointment and experience our reliable and professional services for your truck's engine needs.

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our repairs

Our Full-Service Truck Repair capabilities

Diesel mechanic performing axle repairs on semi-truck in Houston, TX

Axle Repair

We specialize in providing axle repair and maintenance services for heavy equipment and heavy, medium, and light-duty trucks.

Diesel mechanic performing brake repairs on heavy-duty truck in Houston, Texas

Brake Repair

Our commitment to excellence and attention to detail, you can trust our brake repair services to deliver outstanding results.

Diesel mechanic performing coolant system repair services in San Antonio, Texas

Coolant System Repair

We recognize the critical role of a properly functioning coolant system in fleets, heavy-duty, medium-duty, and light-duty trucks.

Diesel mechanic performing ECM tuning services on semi truck in Dallas, Texas

Performance ECM Tuning

At OTR Fleet Service, we excel in performance ECM tuning of fleet, heavy-duty, medium-duty, and light-duty trucks.

Diesel mechanic performing electrical repairs on semi trailer in Austin, Texas

Diagnostics & Electrical Repair

At OTR Fleet Service, we provide comprehensive diagnostic and electrical repairs, to achieve optimal performance and reliability.

Diesel mechanic performing driveline repairs on semi truck in Katy, Texas

Driveline Repair

Our driveline services will ensure optimal performance and reliability for your fleet, heavy-duty, medium-duty, and light-duty trucks.

Mechanic performing EGR & DPF cleaning in Dallas, Texas

EGR & DPF

At OTR Fleet Service, we specialize in EGR and DPF repair services for fleets and heavy-duty, medium-duty, and light-duty trucks.

Mechanic performing diesel engine repairs on semi trucks in Texas

Engine Repair, Rebuild & Conversion

Our expertise and top-quality services will ensure your trucks run at their best.

Diesel mechanic performing express lube service on semi truck fleet in Texas

Express Lube

We understand the importance of keeping your fleet, heavy-duty, medium-duty, and light-duty trucks running smoothly and efficiently.

Diesel mechanic performing exhaust system repairs for semi trucks in Texas

Exhaust System Repair

We are your go-to exhaust system repair and maintenance provider for fleet, heavy-duty, medium-duty, and light-duty trucks.

Diesel mechanic performing AC repairs on semi truck in Texas

HVAC System Repair

At OTR Fleet Service, our specialization lies in delivering exceptional on-the-go HVAC system repair and maintenance services.

Diesel mechanic performing oil & fluid services on semi truck fleet in Texas

Oil & Fluid

We are proud to offer professional oil and fluid services meticulously tailored to meet the unique needs of your vehicles.

Diesel mechanic performing suspension repairs on semi truck in Austin, Texas

Suspension Repair

The suspension system is crucial in ensuring a smooth ride, maintaining proper tire contact with the road, and enhancing stability.

Diesel mechanic performing wheel repairs on semi truck in Texas

Wheel Repair

At OTR Fleet Service, out skilled technicians will keep your wheels in optimal condition for enhanced performance and safety on the road.

Diesel mechanic performing transmission & clutch repairs in Dallas, Texas

Transmission & Clutch Repair

Our comprehensive range of transmission and clutch services is specifically designed to ensure unparalleled reliability.

Diesel mechanic performing truck & trailer alignment services in Texas

Alignment

OTR Fleet Service takes pride in being the premier choice for truck and trailer alignment services.

Testimonials

customer insights

"Highly recommend OTR Dallas for inspection and repair. Michele was awesome! She’s professional and helped us a lot. Great communication. Reasonable price for repairs. Thanks Michele for all the help."  //  Mike Alhoutari

Alternative Distributors

5 stars

"OTR has been a great help to us in both the Dallas and Houston areas. The staff is always very helpful and informative. They provide great customer service, their mechanics, both mobile and in house, are very through and informative."

rodney geibe

5 Stars

"I have taken my trailer into this shop for years. Outstanding service. Everyone at the shop goes out of there way to get you back on the road as quick as possible. If you need work done on your truck or trailer, this is the place to go."

Eston Hammer

5 Stars

"Amazing place!  
Super friendly and fast staff. Rudy Ray was an amazing mechanic! Not only did he get the job finished the same day, he kept me in the loop the entire time. Shout out to him and the great staff at  OTR!"

Angel Cardiel

5 Stars

"Andrea and the rest of the crew were all incredibly punctual and effective. The staff was very kind and listened to my concerns and even gave me a complimentary multi point inspection. The repair was successful as well. Will be using them moving forward."

Caleb Thornburg

5 Stars

"Mike P came out in the rain and thunderstorm to help me get my piggy back back rolling! I really appreciate all his patience becasue he didnt have the key i did in the truck! He waited! I appreciate him and his patience! Thanks"

Caleb Thornburg

5 Stars

"I just want to thank Mario for his extreme professionalism. He made sure that the shock was well replaced and explained the process to my dad well. We usually do not write reviews but my dad could not stop talking about how well the interaction was and how well the job got done. Thank you Mario for this great experience."

Kabe Brown

5 Stars

"They were quick to respond to my needs when other companies were unable. I'd like to give a quick shout out to my man Edward from otr fleet services... that main drive belt 😳 was a pain but you stuck at it. Top notch work."

Deric Jean

5 Stars

"Working for a nationwide trucking company, having a company that we can rely on to keep our equipment running at it full potential is the number 1 reason we use OTR Fleet. The staff at Houston is fast, caring, and available."

Chris Burlison

5 Stars

"I operate a large fleet of trailers and OTR does an awesome job of maintaining my fleet. Block is the mechanic that keeps everything running and operating. He is always ready willing to do what it takes to ensure we do not miss a beat in our fast paced business. Thank you OTR and especially Block! Appreciate all you do for us!"

Semaj Johnson

5 Stars

"Just got serviced by Jacob Scott, very efficient in his work, I was told the eta was 3-4hrs, he was here in an hr and he’s very friendly 🤙🏾"

Ramon Espino

5 Stars

"I want to give Moses a big shout out!! He keeps my company’s fleet up to date and running!! Always going out of his way to make sure we are always taken care of! Thank you Moses for continuing to provide the up most excellent customer service and getting us out of some 911 maintenance!"

Azul Zamarripa

5 Stars

"Awesome team ! Professional helpful and knowledgeable, guys were willing me to help me out with no hesitation. If you’re in San Antonio or the area and need assistance don’t even bother looking else where ! Special thanks to Larry Hector and Delton. Great guys and great service."